Question

(1) Iftan x + tan y = 5 and tan x. tan y =
2
then cot (x + y) = 10.
2​

Answer 1

Answer:

-1/5

Step-by-step explanation:

tan(x+y)=tanx+tany/1-tanx. tany

tan(x+y)=5/1-2

=5/-1

tan( x+y)=-5

cot(x+y)=1/tan(x+y)

cot(x+y)=1/-5

=-1/5